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undergraduate thesis
Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide
2019. urn:nbn:hr:182:617700
Pintarić, Ines
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Pintarić, I. (2019). Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:617700

Pintarić, Ines. "Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2019. https://urn.nsk.hr/urn:nbn:hr:182:617700

Pintarić, Ines. "Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2019. https://urn.nsk.hr/urn:nbn:hr:182:617700

Pintarić, I. (2019). 'Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:182:617700

Pintarić I. Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2019 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:182:617700

I. Pintarić, "Ispitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:182:617700

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Metadata
TitleIspitivanje odzivnih karakteristika senzora s funkcionaliziranim ugljikovim nanocjevčicama na anionske tenzide
Title (english)Investigation of response characteristics of the sensor with functionalized carbon nanotubes to anionic surfactants
AuthorInes Pintarić
MentorMirela Samardžić (mentor)
MentorMateja Budetić (pomoć pri izradi, neposredni voditelj)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2019, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
Tenzidi su spojevi koji smanjuju površinsku napetost otopine u kojoj se nalaze, a sastavljeni su od polarnih i nepolarnih dijelova, odnosno hidrofilnih i hidrofobnih. Postoje četiri glavne kategorije tenzida: anionski, kationski, neionski i amfoterni. Anionski tenzidi su površinski aktivne tvari koje imaju negativno nabijenu hidrofilnu skupinu. Čine 70 – 75% ukupne svjetske potrošnje površinski aktivnih tvari te su najčešće korištena klasa tenzida koja se primjenjuje za čišćenje. Potenciometrija se vrlo često koristi za određivanje koncentracije tenzida na način da se mjeri razlika potencijala između elektroda elektrokemijske ćelije uz ravnotežne uvjete. U ovom radu ispitan je odziv potenciometrijskog senzora s ugljikovim nanocjevčicama na anionske tenzide natrijev dodecilsulfat (NaDDS) i natrijev dodecilbenzensulfonat (NaDBS) u ultračistoj vodi u koncentracijskom području od 2,5·\( 10^{-8}\) M do 5,0·\( 10^{-3}\) M. Mjerenja su se vršila pomoću indikatorske elektrode s čvrstim kontaktom u čiju je membranu ugrađen senzorski materijal s tetrafenilboratom (TPB) i višestjenčanim ugljikovim nanocjevčicama (MWCNT, eng. multi-walled carbon nanotubes) kovalentno modificiranim kvaternim amonijevim kationom.
Abstract (english)
Surfactants are compounds that reduce the surface tension of the solution in which they are contained and they are composed of polar and non – polar parts, that is hydrophilic and hydrophobic. There are four major categories of surfactants: anionic, cationic, nonionic and amphoteric. Anionic surfactants are surfactants that have a negatively charged hydrophilic group. They represent 70 – 75% of the world's total surfactant consumption and are the most commonly used surfactant class used for cleaning. Potentiometry is very often used to determine the surfactant concentration by measuring the potential difference between electrochemical cell electrodes under equlibrium conditions. In this study, the response of a potentiometric sensor with carbon nanotubes to the anionic surfactants sodium dodecyl sulfate (NaDDS) and sodium dodecylbenzenesulfonate (NaDBS) in ultra pure water was investigated in a concentration range between 2,5·\( 10^{-8}\) M and 5,0·\( 10^{-3}\) M. Measurements were made using a solid state indicator electrode with membrane containing sensor material composed of a tetraphenylborate (TPB) and multi – walled carbon nanotubes (MWCNTs) covalently modified by quaternary ammonium cation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:617700
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-12-04 12:23:24